Engineering Questions with Answers - Multiple Choice Questions
Unit Processes MCQ’s – Oxidizing Agents – 2
1 - Question
What is the formula of Chloric acid?
a) Cl02
b) ClO3
c) HClO3
d) H2ClO3
View Answer
Explanation: Chloric acid, HCIO3, is a powerful oxidizing agent.
2 - Question
What is the advantage of Sodium chlorate?
a) High solubility
b) Less cost
c) Large amount
d) All of the mentioned
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Explanation: The solubility of sodium chlorate in water is far greater than that of the potassium salt. Also, it is less expensive, and large amounts are used annually.
3 - Question
Peroxide of which agent is used as an oxidizing agent?
a) Lead
b) Manganese
c) Hydrogen
d) All of the mentioned
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Explanation: The principal peroxides used as oxidizing agents are those of lead, manganese, and hydrogen; such as: PbO2,MnO2 and H2O2.
4 - Question
Silver oxides are strong oxidizing agent?
a) True
b) False
View Answer
Explanation: Silver has the capacity to act as an oxygen carrier or oxidation catalyst, presumably because it can form oxides other than the common Ag2O. Although not extensively used as such, the oxide, Ag2O, acts as a mild oxidation agent.
5 - Question
What is the disadvantage of using Nitric acid as an oxidizing agent?
a) Partial oxidation
b) Nitrating agent
c) Both of the mentioned
d) None of the mentioned
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Explanation: The principal disadvantage of nitric acid as a partial oxidizing agent, rises from the tendency to act as a nitrating agent.
6 - Question
Copper is capable of existing in two states.
a) True
b) False
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Explanation: Copper is capable of existing in two states of oxidation and of passing readily from one to the other of these states by oxidation or reduction. In its higher state of oxidation, it is capable of acting as an oxidizing agent and, in its lower state, as a reducing agent.
7 - Question
Copper salt in its lower state reacts as what?
a) Oxidizing agent
b) Reducing agent
c) Neutralizing agent
d) Both oxidizing and reducing agent
View Answer
Explanation: In its higher state of oxidation, it is capable of acting as an oxidizing agent and, in its lower state, as a reducing agent. This property makes the metal a useful material as an oxygen carrier or oxidation catalyst.
8 - Question
Is fusion with alkali in the presence of air possible?
a) Yes
b) No
View Answer
Explanation: Fusion with alkali in the presence of air (oxygen) often accomplishes oxidations impossible to obtain otherwise. For instance, the formation of oxyacids from substituted phenols by direct oxidation of side chains is difficult of accomplishment because of the much greater susceptibility of the hydroxyl group to attack and consequent tendency for the breakdown of the molecule. Alkali fusion accomplishes the desired reaction but with poor yields.
9 - Question
What is the formula of Fuming Sulphuric acid?
a) H2SO3+SO2
b) H2SO4+SO3
c) H2SO4+SO4
d) H2SO4+OH
View Answer
Explanation: Fuming sulfuric acid, H2S04 + SO3, in the presence of mercury salts acts as a powerful oxidizing agent.
10 - Question
Ozone is a mild oxidizing agent.
a) True
b) False
View Answer
Explanation: Ozone is a very powerful oxidizing agent, and is also used as a bleaching agent in many industries.